Bulletin-board



G. H. WATKINSON & 0. A. WHELAN. Bulletin-Board.

No. 225,446 Patented Mar. 9,1ss0Q 6 h/ Mal/WW ;6 I Maia/WWW UNITED STATES GEORGE E. WATKINSON AND CHARLES A. WHELAN, OF SUN PRAIRIE PATENT OFFICE.

WISGON SIN.

BULLETIN-BOARD.

SPECIFICATION forming part of Letters Patent No. 225,446, dated March 9, 1880.

Application filed September 18, 1879.

' in the county of Dane and State of Wisconsin,

have invented certain new and useful Improvements in Bulletin or Advertising Boards; and we do hereby declare that the tollowingisafull, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accoin panyingdrawings, and to letters of reference marked thereon, which form a part of this specification.

Our invention relates to bulletin or advertising boards in which the letters or characters are impressed or figured on movable and interchangeable blocks.

1 In the drawings, Figure l is a frontelevation. Fig. 2 is a side dew, showing the movable frame. Fig. 3 is an end view of the slat.

Similar letters of reference indicate like parts in all the figures.

The frame or board is formed of a back, end, and side pieces and movable slats. One of the side pieces, 0, is solid, and mortised or bored at short distances to receive the ends of the slats. The opposite side piece is composed of two parts, D and e. D is the larger part, fastened to the back, and bearing open mortises or bores corresponding to those in O, and for the same purpose. To hold the ends of the slats in place in D the additional part c is used, bound by a projection of D at one end, and secured along the side by hooks and eyes or other equivalent devices.

F are the slats, fitting-in the frame. Their ends are cut down or tenoned to fit the mortises or bores in the side pieces. On the under side, at each edge, they are rabbeted to form flanges or projections on the outer side, to hold the letters or blocks in place. The numerous bores or mortises on the sides allow the slats to be placed any desired distance apart.

A are the blocks, bearing impressed upon them any desired characters. 'They are movable in the frame, and any combination or arrangement of them may be made by removing the slats and adjusting the blocks.

The blocks may be of any size, and always held securely in place by means of the slats, which, as has been shown, may be made to assume any distance from each other desired.

Instead of the bottom and top slats, We may use the frame at those points by suitably grooving it.

The letters may also be raised above the slats by having a flange at their base to occupy the rabbet in the slats, and thus stand out in bolder relief.

The back of the board or frame may be solid, or it may be made open, or the back may be entirely dispensed with by grooving the slats and supporting the blocks or letters therein.

The letters may be cut of metal and be th character itself, as shown at a.

Our invention may also be used in primary schools to teach the alphabet.

Our device may be constructed of any material.

Having thus described our invention, we claim- The combination of the letters A, slats F,

tenoned and rabbeted, as shown, back-side GEORGE H. WATKINSON. CHARLES A. WHELAN.

Witnesses E. D. BOWEN, H. DANIELS. 

